Electrical type-heating unit



July 19, 1949. w. F. LAMB ELECTRICAL TYPE-HEATING UNIT Filed April 25, 1947 A m on O E w m m m j k .v a w mm A 1X0 4 E n my W v m w W m a m m 6 m" 2 5 w 2 7, 2 N 7 u 2 T L lll m a m m w Patented July 19, 1949 UNITED STATES PATENT OFFICE 2,476,670 ELECTRICAL TYPE-HEATING UNIT Wilmur F. Lamb, Bremerton, Wash. Application April 25, 1947, Serial No. 743,779 1 Claim. (01. 219-19) This invention relates to a heating arrangement adapted to conduct heat to type, slugs, rule, cuts and base when locked in a printing press chase.

It is an object of the present invention to provide a heating arrangement for use with a printing press chase to enable the operator to do gold stamping, hot embossing, roll leaf printing, plastic forming, and other similar operations where heat is required to efiectively carry on the operation.

Other objects of the present invention are to provide a heating arrangement for a printing press chase which is of simple construction, inexpensive to manufacture, efiicient in operation and wherein the heating elements can be adjusted to different spacings, dependent upon the nature of the work and the area to be heated.

For a better understanding of the invention, reference may be had to the following detailed description taken in connection with the accompanying drawing, in which Fig. 1 is a plan view of a printing press chase with the heating arrangement of the present invention installed therein,

Fig. 2 is an enlarged perspective view of the main contact element with one of the heating units attached thereto,

Fig. 3 is a cross-sectional view taken on line 3-3 of Fig. 2,

Fig. 4 is a longitudinal cross-sectional view taken on line 44 of Fig. 5 and of one of the heating units,

Fig. 5 is an end elevational view of a heating unit looking upon the curved contact points,

Fig. 6 is a top plan view of one of the heating elements,

Fig. 7 is an enlarged cross-sectional view taken on line 1-1 of Fig. 6,

Fig. 8 is a wiring diagram of the arrangement.

Referring now to the figures, [5 represents a printing press chase having locking quoins l6. Having substantially the shape of a locking quoin is a contact element I! having vertically spaced grooves l8 and I9 therein through which there extends long contact elements 2| and 22 respectively. These contact elements 2| and 22 are connected to an electric source by a cable cord 23 and a plug 24. Adapted to slide over the contact elements 2| and 22 are curved contact points 25 and 26 of a heater unit 21 adapted to extend laterally through the type and the like and the lying in spaces 28 therebetween. The heating elements are formed from high resistance wire 29 wound upon a central insulating member 3| and insulated from a metal casing 32 by insulating pieces 33.

There can be any number of these heating elements disposed within the chase and all of the same will be connected in parallel relationship with one another and across the contact bars 2! and 22. By havin the contact terminals 25 and 26 curved they will slide in easily within the grooves l8 and I9. Little space will be consumed by the heating arrangement and the heating elements 2! will be minimum thickness for this purpose. The contact element I! is of such shape as to easily set flush within and upon the base of the printing press chase l5.

While various changes can be made in the detail construction of the arrangement, it shall be understood that such changes shall be within the spirit and scope of the present invention as defined by the appended claim.

I claim:

A heating arrangement for printing press chases comprising a contact terminal member adapted to extend along the side of the printing press chase and having contact terminals extending along its inner edge, and heating elements for contact terminals in one end thereof adapted to engage respectively with the contact terminals of the contact member, a cable cord adapted for attaching the contact terminal member to an electric source, said contact terminals in the contact member being disposed in grooves in the side face of the contact terminal member, and extending substantially throughout the length of the contact terminal member, the contact terminals of the heating unit being curved respectively in opposite directions and extending into the recesses of the contact terminal member for engagement with the contact elements therewithin.

WILMUR F. LAMB.

REFERENCES CITED The following references are of record in the file of this patent:

NITED STATES PATENTS 

